Please post here all of your reports about bugs or crashes in SpaceEngine. Before you post any bugs, please follow these steps:

Read the Fixing common issues section below. It is possible that your problem can be solved there.

Read the List of known issues section below and make sure that your bugs are not on in it. You can use your browser's word finder to help search the list.

If the bug is not on the list then please post it in this thread. Attach to your message a screenshot (if possible) and a log file (it's called the se.log and is located in the SpaceEngine/system/ directory). Only the log file will help me to understand your problem and find a solution!

Fixing common issues

1) Obsolete or incompatible drivers These are the most frequent errors found in SE. You will get a popup window with one of these following messages:

- "Error loading surface generator shaders. Press YES to run program with procedural planets disabled. Press NO to exit"

Download and install latest drivers for your video card. If you still get this message, it could be that you have an incompatible video card (see next paragraph).

[CRITICAL NOTE] Some recent NVidia drivers are incompatible with SE. Symptoms are flashing planet images on the screen when you open the F2 menu (see the spoiler), missing lens flares, grayed out options for HDR and FXAA in the Graphics settings menu, and other glitches. The errors in the se.log are look like this:

NOTE: I can give no guaranties that SpaceEngine will be stable and work correctly if you do make this change.

If you have an "Error loading surface generator shaders" error and press Yes, SpaceEngine can run, but it will not be able to render procedural planetary landscapes.

After updating or rollback of the drivers, you must delete the cache folder in the SpaceEngine directory.

2) Weak system Most of the forum posts I receive are from users that report an inability to start SpaceEngine, This is because those users have inbuilt Intel graphics card, or some old GeForce 5700 series, or not a proper "gaming" laptop. There is no way but to update your hardware system. There are no plans to make a second version of the engine for weaker systems with simplified graphics, CPU texture generation, etc. It would be like coding another engine from scratch. Once again, I would remind everyone that the minimum system requirements can be found on the Home page, but I will mention it here as well:

CPU 2.0 GHz RAM 2 Gb Video GeForce 8600, Radeon HD 2600 vRAM 512 Mb

I stress that the special role played by videocard onboard memory (vRAM). 512 MB is the absolute minimum. The engine uses a large amount of data that must be in video memory (textures, meshes, vbo, etc). If your system meets the recommended requirements, the engine will work, because its development is made for this hardware:

You can try to start the engine with some OpenGL extensions disabed, if your hardware does not support them: frame buffer objects (FBO), half floats, float textures and 3D textures. Information about this is written at the beginning of the log (SpaceEngine/system/se.log), after the list of extensions:

If the log reads 'unsupported, then the extension is not supported and the engine will disable itself. If it seems to support float and 3D textures, but the atmosphere of planets has some monstrous bottleneck, such as the GeForce 6200 and GeForce 6600, then it is best to disable those extensions forcibly. This is done in the file config/main.cfg:

Reference: - The Milky Way and other nearby galaxies and nebulae use FBO. HDR rendering mode also use FBO. Disabling it disables the 3D models of galaxies and nebulae, and disables HDR mode. - Atmospheres using float and 3D textures. Disabling any of them disables the atmosphere. HDR rendering mode uses a float textures, disabling them disables HDR. - Shader binary cache reduces lags on loading shaders. Works normally on NVidia, onr ATI and Intel it disabled automatically after first laubch of SpaceEngine.

If you have a Intel HD graphics card, it is better to disable asynchronous loading in the main.cfg as well:

3) System with hybrid graphics (NVidia/ATI + Intel HD) If you're running SE on a laptop with dual graphics, make sure SE runs on NVidia or ATI chip instead of Intel HD. You may see it in the beginning of "SpaceEngine/system/se.log" file. If it says: Vendor: Intel Renderer: Intel® HD Graphics 4000

then you should open NVidia Control Panel or ATI Catalyst and force SpaceEngine.exe run on NVidia/ATI graphics card. If you do not found SpaceEngine profile there, create a new one.

4) Crashing in the interstellar or intergalactic space or after appearing of the nebula in the view field If you open the "SpaceEngine/system/se.log" file after a crash, and it ends up with line like this:

Creating nebula model "cache/models/nebulae/M42.nm",

then try to disable asynchronous loading of a resources. Open the file config/main.cfg with the Notepad and change this parameter to 1:

After that, delete the cache folder from the SpaceEngine directory. Performance will drop while flying between a stars and galaxies, but stability may be improved. After a while, all models of galaxies and nebulae a being be generated, and you may enable asynchronous loading back (set up LoaderMode 2).

5) Spaceship disappear when far from a star It is not a bug. Current version have not yet completed spaceships rendering system - they cannot be rendered if there is no stars or planets in the renderlist. Just imagine that ship becomes invisible in interstellar flight

6) Blurry textures on Solar system planets It is not a bug. Our Solar system planets (Mercury, Venus, Earth, Moon, Mars, Jupiter, Saturn, Uranus, Neptune and its satellites) have no procedural textures, only real ones with limited level-of-detail. You can download addons with high resolution textures to increase level of detail of real planets.

7) Artifacts on procedural planets If you get missing landscape blocks, blurry or blinking textures, random spikes sticking out of surface, check out these recommendations here:

a) If you have a laptop with hybrid graphics, read the paragraph 3.

b) Make sure that you make a "clean" installation of SE. If you install a new version overwriting the old one, you may get many bugs and glitches. If you get some glitches after the patch is installed, remove the folder called cache from SpaceEngine's directory.

c) If this does not help, read the paragraph 8.

8) Frequent crashing while generating planetary surface If you have frequent crashes on planets, or get an "OUT OF MEMORY" message on screen, or "Unexpected deleting of child node" in the log file, try taking these steps first:

Close any other programs that can consume the video memory (games, video players, graphics editors, etc.). SpaceEngine is not a small flash type game, video memory is the most important resource for it. It may help to disable the Windows Aero theme too, as it consumes a lot of video memory.

Disable "3D water" in Graphics settings (Ctrl-F4)

Reduce "Landscape LOD" to -2 in Graphics settings (Ctrl+F4)

Set up the amount of video memory in the main.cfg file:

VideoMemorySize 2048 // video card onboard memory (VRAM) in megabytes

The value must not be less than 1024, but not more than the total amount of physical video memory plus amount of RAM. For example, if you have a graphics card with 1024 MB of video memory, and more than 2 GB of RAM, you can increase VideoMemorySize to 2048.

List of known issues

Green items have been fixed for the next release

Not real bugs, but effects caused by limitations in the engine: - Ships do not render in interstellar space - Star catalog has many errors in star classification, so there are many "giant dwarfs" and "dwarf giants" - Many real binary stars rendered as single, and many single rendered as binary - SE simply have incomplete catalog of binary stars - An unwanted star (sprite) is visible in the barycenter of a binary star from distance greater than 0.01 pc - Comet nucleus star-sprite will shine through planets [example]. - Galaxy/nebula sprites will rotate when seen from certain angles - Auroras, comet tails and rings can be rendered in front of ships/moons sometimes - Lens flares are distorted by gravitational lensing (black holes and ship warp drive effect) - Text editor for Wiki descriptions is not working - it is not implemented yet - Solar system moons don't have extremely accurate orbits (requires implementation of custom orbit models, e.g. VSOP-87) - Sunspot distribution is not always realistic - Ocean tag not yet implemented in planet editor - Rounding errors (e.g. 30° in catalog rounds to 29°59'59.99" displayed on HUD) - Ship retro engines have not been implemented yet

Real bugs: - Too many planets with life (panspermia issue) - Oceanias have landscapes above water - Several bugs with the planet editor - Changing "modes" between simulation and orbital when piloting ships can cause glitches - Few issues with asynchronous loading (stars don't always generate properly, especially when flying to new galaxies) - Holes in some giant stars when camera is directly above a very tall spot[example] - Flashing landscape LOD on a planet when Wiki for it is displayed - Star clusters not displayed in Wiki - GUI response issues with some users (interface items glitchy or not respond easily) - GUI toolbars may completely disappear when pressing pin button while half-hidden - Deep space objects (e.g. stars, galaxies) will shine through planets when HDR for DSO is off, but HDR is on and Bloom is on [example] - Some neutron stars can have very low temperatures[example] - Flickering flare color in close binary systems [example] - Auto-exposure does not react when a sun is blocked while diffraction spikes are set to normal or super - Planet rings have an unrealistic color palette - "Eclipse bug" on distant planets (weird dark shimmering on outer planet caused by inner planet crossing the sun or two suns eclipsing) - Cloud cyclones have cut edges sometimes - Level horizon command (End key) doesn't work properly on oblate objects - Problems when releasing Left + Right click - Lines or junctures are visible on planetary surface - Switching to fullscreen doesn't work sometimes - Weird behavior of movement keys in tracking mode (T) and after releasing it - Automatic reference object setting with spacecraft doesn't always choose the best object (for example, when near dwarf moons or debris asteroids close to a planet you are trying to orbit) - 3D water fog sometimes starts above the water surface - Problems with the skybox export interface, and with the planetarium after using it, for some users - Music player will unpause when SE window is minimized and restored, or when entering and exiting the main menu - If a galaxy model is selected, the camera is not following any object, and the program is in Edit Mode, closing and restarting the program will cause the WASDRF movement keys to behave incorrectly until the camera is set to follow an object - "Crop orbits" in the Map mode doesn't work - Spaceship and lens flare textures do not load when loader mode is set to "Immediate" - Visual atmosphere heights are inconsistently and unrealistically generated - Physical atmosphere properties are inconsistently and unrealistically generated, and are not tied to the visual models - Dwarf moons can be generated on colliding orbits - Moons are never generated with retrograde orbits - Bugs with the surfaces of carbon stars and zirconium stars - Cyclones are not generated in the southern hemispheres of gas giants - Sometimes, worlds which are too small are classed as "selena" when they should be classed as asteroid - Shimmering bloom splotch when very close to the surface of a planet [example] - CW/CCW rotation keys for ship in atmosphere are reversed - Mouse axis inversion settings for spaceship controls are not saved - Z faces are switched when exporting skyboxes (pos_Z is really neg_Z)

It's not a quasar. It's just a planetary nebula which was generated at the exact center of the galaxy. Really this is something that should not happen, so it can be thought of as a bug. Quite an extraordinary find though.

For all practical purposes they aren't, since they're no different from ordinary galaxies. I don't think they're supposed to exist at all, it's probably a bug (or he gave them a one in a million chance at having that class just for fun )

Hey I'm new here etc etc. I've known about Space Engine for a while but I didn't bother downloading it till now. That was because I knew my computer (a 2011 ASUS just so you know) probably couldn't handle it as well as I would want it to. But I kept watching SE videos on YouTube and I finally broke down and downloaded it anyway. It takes a while to load up and it runs ok as long as I don't try to land on anything; when that happens, it lags like all hell and I have to wait a minute (literally) before I can do anything else. Well, it worked like that the first few times I tried it. I loaded it up again today and instead of doing the whole initializing planets, stars, galaxies etc. it goes down into a SE button on my taskbar and won't go any further. I click on the SE button and wait and wait and wait, and nothing happens. This is really bumming me out because I am a huge space fan and SE is the only space simulator I'm aware that well let you explore the entire universe. Please help?